JVM C/C++ Service Engineer

November 1, 2025

Introduction Are you driven by the challenge of servicing and supporting high-performance, scalable, and reliable systems software? Join our team of expert engineers developing and servicing the Java Virtual Machine (JVM) — the engine behind millions of applications across cloud, enterprise, and AI workloads. Built with the OpenJDK class libraries and the Eclipse OpenJ9 JVM <https://eclipse.dev/openj9>, IBM Semeru Runtimes <https://ibm.biz/semeru-runtimes> deliver high quality, strong security, and top performance to run Java applications on-prem or in the cloud. Rigorously engineered and tested to run on operating systems like Windows, macOS, and Linux and server platforms such as Arm, X86, IBM POWER and Z systems, IBM Semeru Runtimes are built by a globally diverse team and used by hundreds of IBM software products and tens of thousands of customers, powering businesses from startups to giant corporations in virtually every industry. When a customer reports an issue with one of these products in the field, the issue may end up with the IBM Runtime Technologies L3 Service squad. It is our team’s mission to determine the root cause of such failures and deliver effective fixes in a timely manner. Why Join us? This might just be the job for you if you: <ul><li>Are curious about how language runtimes work</li><li>Are interested in working with multiple hardware and software platforms</li><li>Love native-level debugging</li><li>Enjoy a fast-paced, ever-changing work environment and workload</li><li>Are passionate about providing an exemplary customer experience</li><li>Are eager to collaborate with clients and colleagues across multiple geographies and business units </li></ul>You Will <ul><li>Work on cutting-edge runtime technology used by millions of developers</li><li>Tackle deep technical challenges that push the boundaries of performance and scalability</li><li>Be part of a collaborative, world-class team of JVM engineers</li><li>Enjoy flexible work arrangements, competitive compensation, and opportunities for career growth</li><li>Influence the future of Java in cloud-native, AI, and enterprise environments </li></ul>Your Role And Responsibilities As a member of our team, in this role you will diagnose and resolve issues reported against our language runtimes by both internal and external clients, with a focus on issues with the Java Virtual Machine (JVM) component of the Java runtime. You will work closely with client-side support engineers to further understand the problem and collect failure data, and with the development team for deep diagnosis and fix development and delivery. You will also work with other members of the Runtimes L3 team whose expertise is with other components of the Java runtime. You will work with a wide variety of software failure types, including crashes, performance issues, and exception / error conditions. You'll work across an assortment of supported platforms, including the Linux, Windows, AIX, and z/OS operating systems, and on X86, POWER, Z, and ARM processor architectures. Most of your debugging and diagnosis will be done post-mortem, i.e. through analysis of data collected at the time of the failure. You will often work with the client and other IBM service engineers to collect additional data, occasionally providing diagnostic builds to enable additional failure data collection. Preferred Education Bachelor's Degree Required Technical And Professional Expertise <ul><li>Proven debugging and problem diagnosis skills</li><li>At least 1 year working knowledge with Linux and Windows</li><li>Experience with at least one native debugger</li><li>Working knowledge of C/C++ programming, runtimes, data structures and algorithms</li><li>Good knowledge of one or more processor architectures, e.g. x86, ARM, POWER, and Z</li><li>Demonstrated effective written and verbal communication skills </li></ul>Preferred Technical And Professional Experience <ul><li>At least 6 months in a technical support or customer service role</li><li>Experience working with Customer Relationship Management (CRM) and other trouble-ticketing tools, ideally Salesforce</li><li>Working knowledge of Java programming</li><li>Working knowledge of AIX and/or z/OS</li><li>Experience with Shell scripting </li><li>Knowledge in one or more of the following areas:</li><ul><li>Virtual machine architecture and runtime services</li><li>Garbage Collection algorithms and memory management</li><li>Compiler theory and JIT optimization techniques</li></ul></ul>

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